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TDA8787HL Datenblatt(PDF) 7 Page - NXP Semiconductors |
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TDA8787HL Datenblatt(HTML) 7 Page - NXP Semiconductors |
7 / 20 page 1998 Oct 15 7 Philips Semiconductors Preliminary specification 10-bit, 3.0 V analog-to-digital interface for CCD cameras TDA8787 CHARACTERISTICS VCCA =VCCD = 3.0 V; VCCO = 2.6 V; fpix = 18 MHz; Tamb =25 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VCCA analog supply voltage 2.7 3.0 3.6 V VCCD digital supply voltage 2.7 3.0 3.6 V VCCO digital outputs supply voltage 2.5 2.6 3.6 V ICCA analog supply current all clamps active − 55 70 mA ICCD digital supply current − 811 mA ICCO digital outputs supply current CL = 20 pF on all data outputs; input ramp frequency − 12 mA Digital inputs INPUTS: SHP, SHD, STDBY, CLPDM, CLPOB, SCLK, SDATA, SEN, VSYNC, OE AND PBK VIL LOW-level input voltage 0 − 0.6 V VIH HIGH-level input voltage 2.2 − VCCD V Ii input current 0 ≤ Vi ≤ VCCD −2 − +2 µA Clamps GLOBAL CHARACTERISTICS OF THE CLAMP LOOPS tW(clamp) clamp active pulse width in number of pixels AGC code = 383 for maximum 4 LSB error 18 −− pixels INPUT CLAMP (DRIVEN BY CLPDM) gm(CDS) CDS input clamp transconductance 1.5 2.7 3.5 mS OPTICAL BLACK CLAMP (DRIVEN BY CLPOB) Gshift gain from CPCDS1 and 2 to AGC inputs − 0.27 −− ILSB(cp) charge pump current for ±1 LSB error at ADC output AGC code = 0 −±350 −µA AGC code = 383 −±10 −µA Ipush(cp) available push current of the charge pump − 650 −µA Ipull(cp) available pull current of the charge pump −−650 −µA |
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